California earthquakes

M1.9 earthquake 11km WSW of Anza, CA

A magnitude 1.9 earthquake struck 11km WSW of Anza, CA on Wed, Jan 31, 1979, 4:45 AM PST (12:45 UTC), 6 km (3 mi) below the surface.

A larger quake followed: M5.2 23km NNW of Joshua Tree, CA. This one was a foreshock.

Anza forecastMore in California

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
1.9 (mh), micro
Local time
UTC
1979-01-31 12:45:44 UTC
Depth
5.5 km (3.4 mi), shallow
Epicenter
33.518° N, 116.784° W
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 0.5 km horizontally, 23.7 km in depth
Magnitude uncertainty
±0.27
Depth from
From location
Station coverage gap
127°
Stations used
22

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 174 in the 60 days after this one and 93 in the 30 days before it.

After

  1. 2.09km NNW of Anza, CA · 17409 days ago · 16 km deep · 13 km away
  2. 2.122km ESE of Anza, CA · 17409 days ago · 13 km deep · 30 km away
  3. 2.29km NW of Garnet, CA · 17408 days ago · 8 km deep · 52 km away
  4. 1.67km WSW of Beaumont, CA · 17408 days ago · 13 km deep · 50 km away
  5. 1.622km ESE of Anza, CA · 17407 days ago · 13 km deep · 30 km away
  6. 1.810km ESE of Anza, CA · 17407 days ago · 12 km deep · 19 km away
  7. 1.617km ESE of Julian, CA · 17407 days ago · 12 km deep · 64 km away
  8. 1.94km ENE of Desert Hot Springs, CA · 17407 days ago · 7 km deep · 60 km away
  9. 1.88km NE of Indio, CA · 17406 days ago · 8 km deep · 65 km away
  10. 1.610km E of Big Bear City, CA · 17406 days ago · 2 km deep · 83 km away
  11. 2.211km SE of Anza, CA · 17405 days ago · 12 km deep · 18 km away
  12. 1.82km N of Fontana, CA · 17405 days ago · 4 km deep · 91 km away
  13. 1.920km N of Joshua Tree, CA · 17405 days ago · 0 km deep · 97 km away
  14. 2.02km NNW of Fontana, CA · 17405 days ago · 4 km deep · 91 km away
  15. 1.610km WSW of Morongo Valley, CA · 17405 days ago · 12 km deep · 56 km away
  16. 1.66km SSE of Redlands, CA · 17404 days ago · 4 km deep · 64 km away
  17. 1.56km SSE of Idyllwild, CA · 17404 days ago · 18 km deep · 21 km away
  18. 1.618km ESE of Anza, CA · 17404 days ago · 5 km deep · 27 km away
  19. 2.53km NE of Calimesa, CA · 17404 days ago · 4 km deep · 59 km away
  20. 1.711km NNE of Morongo Valley, CA · 17404 days ago · 3 km deep · 73 km away
  21. 1.52km NE of Banning, CA · 17404 days ago · 5 km deep · 47 km away
  22. 2.79km NE of Borrego Springs, CA · 17403 days ago · 14 km deep · 51 km away
  23. 1.85km SSW of Redlands, CA · 17403 days ago · 15 km deep · 67 km away
  24. 2.117km SSW of Borrego Springs, CA · 17403 days ago · 6 km deep · 57 km away
  25. 1.69km NE of Cabazon, CA · 17403 days ago · 14 km deep · 51 km away
  26. 2.19km SE of Valle Vista, CA · 17402 days ago · 14 km deep · 20 km away
  27. 1.80km S of Muscoy, CA · 17402 days ago · 11 km deep · 88 km away
  28. 1.723km S of Twentynine Palms, CA · 17402 days ago · 3 km deep · 83 km away
  29. 2.023km S of Twentynine Palms, CA · 17402 days ago · 2 km deep · 83 km away
  30. 1.523km S of Twentynine Palms, CA · 17402 days ago · 6 km deep · 83 km away
  31. 1.523km S of Twentynine Palms, CA · 17402 days ago · 3 km deep · 83 km away
  32. 1.73km E of Loma Linda, CA · 17401 days ago · 13 km deep · 72 km away
  33. 1.76km S of Idyllwild, CA · 17401 days ago · 16 km deep · 19 km away
  34. 1.911km NNW of Cabazon, CA · 17401 days ago · 9 km deep · 55 km away
  35. 2.017km SSW of Borrego Springs, CA · 17401 days ago · 11 km deep · 57 km away
  36. 1.723km S of Twentynine Palms, CA · 17401 days ago · 1 km deep · 83 km away
  37. 1.624km S of Twentynine Palms, CA · 17401 days ago · 6 km deep · 82 km away
  38. 2.016km ENE of Yucaipa, CA · 17401 days ago · 9 km deep · 64 km away
  39. 2.58km SSW of Idyllwild, CA · 17401 days ago · 12 km deep · 17 km away
  40. 1.913km N of Borrego Springs, CA · 17401 days ago · 4 km deep · 41 km away
  41. 1.624km S of Twentynine Palms, CA · 17400 days ago · 6 km deep · 82 km away
  42. 1.624km S of Twentynine Palms, CA · 17400 days ago · 6 km deep · 82 km away
  43. 1.924km S of Twentynine Palms, CA · 17400 days ago · 2 km deep · 83 km away
  44. 2.023km S of Twentynine Palms, CA · 17400 days ago · 3 km deep · 83 km away
  45. 1.522km S of Twentynine Palms, CA · 17400 days ago · 3 km deep · 83 km away
  46. 1.622km S of Twentynine Palms, CA · 17400 days ago · 3 km deep · 84 km away
  47. 1.511km WNW of Yucca Valley, CA · 17400 days ago · 2 km deep · 73 km away
  48. 1.712km SW of Salton City, CA · 17400 days ago · 12 km deep · 76 km away
  49. 1.623km S of Twentynine Palms, CA · 17400 days ago · 6 km deep · 83 km away
  50. 1.716km SSW of Ocotillo Wells, CA · 17399 days ago · 6 km deep · 77 km away
  51. 1.94km N of Valle Vista, CA · 17399 days ago · 10 km deep · 31 km away
  52. 1.517km ESE of Anza, CA · 17399 days ago · 14 km deep · 26 km away
  53. 1.711km N of Cabazon, CA · 17399 days ago · 10 km deep · 55 km away
  54. 1.721km N of Joshua Tree, CA · 17399 days ago · 2 km deep · 98 km away
  55. 1.714km NNE of Borrego Springs, CA · 17398 days ago · 12 km deep · 47 km away
  56. 2.712km N of Borrego Springs, CA · 17398 days ago · 14 km deep · 41 km away
  57. 1.818km N of Borrego Springs, CA · 17398 days ago · 12 km deep · 38 km away
  58. 1.76km S of Redlands, CA · 17398 days ago · 14 km deep · 65 km away
  59. 4.222km N of Borrego Springs, CA · 17397 days ago · 11 km deep · 35 km away
  60. 2.023km SSW of La Quinta, CA · 17397 days ago · 10 km deep · 35 km away

The first 60 of 174.

Before

  1. 2.23km SSE of Lake Henshaw, CA · 17410 days ago · 10 km deep · 34 km away
  2. 1.816km E of Desert Hot Springs, CA · 17410 days ago · 0 km deep · 66 km away
  3. 2.213km SE of Anza, CA · 17410 days ago · 11 km deep · 19 km away
  4. 2.320km N of Joshua Tree, CA · 17410 days ago · 0 km deep · 98 km away
  5. 1.710km NE of Cabazon, CA · 17411 days ago · 12 km deep · 51 km away
  6. 1.714km NNW of Aguanga, CA · 17411 days ago · 6 km deep · 13 km away
  7. 2.011km N of Cabazon, CA · 17411 days ago · 14 km deep · 55 km away
  8. 1.57km S of Redlands, CA · 17411 days ago · 16 km deep · 65 km away
  9. 1.86km NNE of Beaumont, CA · 17411 days ago · 15 km deep · 53 km away
  10. 2.220km N of Joshua Tree, CA · 17412 days ago · 1 km deep · 98 km away
  11. 2.220km N of Joshua Tree, CA · 17412 days ago · 1 km deep · 98 km away
  12. 2.320km N of Joshua Tree, CA · 17412 days ago · 1 km deep · 98 km away
  13. 1.811km SW of Idyllwild, CA · 17412 days ago · 11 km deep · 18 km away
  14. 1.914km NNW of Aguanga, CA · 17412 days ago · 7 km deep · 13 km away
  15. 2.123km SW of Ocotillo Wells, CA · 17412 days ago · 9 km deep · 77 km away
  16. 1.623km ESE of Anza, CA · 17413 days ago · 15 km deep · 32 km away
  17. 1.810km SSW of Idyllwild, CA · 17413 days ago · 15 km deep · 16 km away
  18. 1.63km NE of Twentynine Palms, CA · 17413 days ago · 12 km deep · 98 km away
  19. 1.614km W of Anza, CA · 17413 days ago · 12 km deep · 8 km away
  20. 1.513km WNW of Anza, CA · 17413 days ago · 12 km deep · 7 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci3345839. Read Wed, Sep 30, 2026, 3:33 PM UTC.